How will you describe the relationship between the data in the bar chart and the date that people infected with COVID‐19?

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Question 1 

a) Identify the title? 

b) Identify the variables? 

c) Determine the type of variable? 

d) How many new cases on Feb 4 (as a percentage)? 

e) How will you describe the relationship between the data in the bar chart and the date that people infected with COVID‐19?

Question 2

A sample of 40 bus drivers employed by public corporations was selected, and the number of traffic accidents in which each bus driver was involved during a 10-year period was determined.

Number of accidents Frequency

0-5 10

6-11 ?

12-17 15

18-23 5

a) The sample size is _______________ .

b) The frequency of the second class is ________________.

c) The class width of the second class is _______________.

d) The midpoint of the fourth class is _________________.

e) The lower boundary of the third class is _____________.

f) The lower limit of the second class is _______________.

g) The relative frequency of first and third class are _______________.

h) The upper boundary of the third class is _____________.

i) The relative frequency ( in percentage ) of the fourth class __________ .  

Question 3

The number of calls from motorists per day for roadside service was recorded for the month of December 2003.  The results were as follows 

Construct a Frequency  DistributionTable. Draw Histogram.Find relative frequency and percentage.

 

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